JP4038078B2 - Control equipment - Google Patents

Description

[0001]
[Technical field to which the invention belongs]
The present invention relates to a control device, and more particularly, to provide a control device that can be attached to a control panel or a DIN rail.
[0002]
[Prior art]
Various control devices included in the programmable logic controller (PLC) are used by being attached to a control panel or attached to a DIN rail.
[0003]
This type of control device has a monitor, various key switches, etc. on the front surface of the casing so that the user can access, and a terminal group is provided on the back surface of the casing. An opening was formed in the front panel of the control panel, and the control device was inserted into the opening so that the front surface of the control device was exposed to the outside.
[0004]
In order to attach the control device to the DIN rail, a pair of claws that engage with the DIN rail is prepared on the back surface of the control device, and the control device is attached to the DIN rail using the pair of claws.
[0005]
[Problems to be solved by the invention]
As described above, the control device has a completely different mounting method for the control panel and the mounting method for the DIN rail, so two types are prepared for the same control device. There are two types, one for DIN mounting, and the other is sold according to the user's selection.
[0006]
However, such a production / sale format in which a dedicated device is prepared for each different mounting method is not necessarily preferable because it results in an increase in the types of inventory. Moreover, in the control equipment for the control panel, since the control equipment is inserted into the opening of the front panel of the control panel from the outside to be attached to the control panel, the shape of the casing of the control equipment is generally composed of a cube or a rectangular parallelepiped. For this reason, the number of terminals on the back surface of the control device is limited by the area of the back surface of the casing, that is, the area of the opening of the front panel of the control panel.
[0007]
Therefore, a main object of the present invention is to provide a control device that can be attached to a control panel or a DIN rail.
[0008]
Another object of the present invention is to provide a control device that is not limited by the number of terminals in addition to the main object described above.
[0009]
[Means for Solving the Problems]
According to the present invention, such a technical problem is
A control device comprising a main body and terminal block parts that are separable from each other, and can be attached to a control panel and a DIN rail,
The main body includes an operation unit and a display unit, and a front panel larger than an opening formed in the panel of the control panel;
A body casing having a cubic or rectangular parallelepiped shape extending rearward from the front panel and having a height-direction cross section that can be inserted into the opening ;
A part of the rear surface of the front panel that protrudes outward from the main body casing, and a step portion that is locked to the periphery of the opening of the control panel when the main body casing is inserted into the opening;
A first connector provided on the back surface of the main casing and connected to the terminal block component;
The terminal block parts are:
A second connector provided on the front surface of the terminal block component and connected to the first connector;
A groove for a DIN rail having a width corresponding to a DIN rail having a predetermined width and a plurality of claws for locking the DIN rail , provided on the back surface of the terminal block component ;
The height dimension of the terminal block component is larger than the height dimension of the opening of the control panel,
A protrusion protruding in the width direction of the DIN rail from the main body casing when the first connector of the main body casing and the second connector of the terminal block component are connected after the main body casing is inserted into the opening of the control panel. Further comprising
This is achieved by providing a control device characterized in that a plurality of terminals are provided on the surface of the protrusion facing the control panel .
[0010]
That is, according to the control device of the present invention, when the control device of the present invention constituted by the main body and the terminal block parts that are separable from each other is attached to the opening of the control panel or the like, after the control device main body is inserted into this opening, The terminal block parts may be assembled to the main body. As described above, since the control device is composed of a main body and a terminal block component that can be separated from each other, the size of the terminal block component is not limited by the size of the opening of the control panel or the like, and can be arbitrarily sized. Therefore, any number of terminals can be set.
[0011]
Further, according to the control device of the present invention, it is possible to attach the terminal block component to the DIN rail using the means for attaching the terminal block component to the DIN. That is, the control device of the present invention can be attached to either the control panel or the DIN rail.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
In a preferred embodiment of the present invention, the connector is provided at a position corresponding to each of a back surface of the main body and a first surface of the terminal block component facing the back surface of the main body. And the terminal block parts can be assembled and connected to the connector at the same time.
[0013]
Further, it is possible to provide an extension connector on the terminal block parts and connect the external device and the harness using the extension connector. Also, when an extension relay connector is provided on the back of the unit body, standardizing the association between each terminal of this extension relay connector and the corresponding terminal of the external device, for example, another type of control It becomes possible to combine the main body of equipment with common terminal block parts.
[0014]
For example, when changing from the first type of control device used up to now to the second type of control device in accordance with changes in factory equipment, this can be handled by changing only the main body. Will be able to.
[0015]
In a preferred embodiment of the present invention, a mechanical setting lock switch is provided on the back surface of the main body or the first surface of the terminal block component. Thus, by providing the setting lock switch on the mating surface between the main body and the terminal block parts, it is possible to prevent the setting lock switch from being inadvertently switched.
[0016]
【Example】
Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.
1 and 2 show a temperature adjustment control unit 100 according to an embodiment. The temperature adjustment control unit 100 includes a unit main body 101 and a terminal block component 102 that is separate from the unit main body 101, and these constitute the temperature adjustment control unit 100.
[0017]
The unit main body 101 has a rectangular front panel 103 having a relatively flat thickness and a rectangular parallelepiped main body casing 104 extending rearward from the front panel 103, and the main body casing 104 has a cross section in the front panel 103. Accordingly, a stepped portion 105 projecting outward along the periphery of the main body casing 104 is formed between the back surface of the front panel 103 and the main body casing 104.
[0018]
A total of four legs 106 having a substantially rectangular cross section extending rearward are formed at the four corners of the back surface or rear end face of the body casing 104 having a substantially rectangular cross section. A screw hole 107 is formed.
[0019]
As best understood from FIG. 2, the unit main body 101 is provided with a display unit 108 such as a liquid crystal or a 7-segment LED on its front panel 103, and an operation comprising a plurality of key switches accessible by the user. A portion 109 is provided. In the main body casing 104 of the unit main body 101, a total of four bases 110 to 113 of the first to fourth are incorporated.
[0020]
The first to third substrates 110 to 112 are arranged parallel to each other along the longitudinal direction of the main body casing 104, and the first substrate 110 at the center receives the supply of electric power and signals from the outside and is positioned on both sides thereof. A signal is transmitted to the second and third substrates 111 and 112 to generate control signals to various devices connected to the terminals of the terminal block component 102 by the second and third substrates 111 and 112. .
[0021]
Control signals generated by the first, second and third substrates 110, 111 and 112 are transmitted to the terminal block component 102 via the relay substrate 113 arranged along the back surface of the main casing. More specifically, the control signals generated by the first, second, and third boards 110, 111, and 112 are transmitted to the relay connector 115 of the relay board 113 that is connected to the second and third boards 111 and 112. , 116 is supplied to a multi-pole female connector 114 separately provided on the relay substrate 113. Needless to say, external signals and power supply to the first, second, and third substrates 110 to 112 are also supplied to the substrates 110 to 112 through a similar path. In this embodiment, a multi-pole female connector 114 is disposed at a substantially central portion of the relay board 113, and relay connectors 115 and 116 are disposed on both sides of the multi-pole female connector 114.
[0022]
The terminal block component 102 has a relatively flat rectangular parallelepiped shape projecting in the front-rear direction, and a first surface 120 facing the unit body 101 has a pair of rectangular parallelepiped protrusions 121 spaced apart in the longitudinal direction, 122 is formed, and the pair of protrusions 121 and 122 are arranged to be separated by substantially the same distance as the width of the main body casing 104 of the unit main body 101.
[0023]
FIG. 3 is a front view of the terminal block component 102 as viewed from the unit body 101 side. As can be best understood from FIG. 3, the pair of protrusions 121 and 122 extend from end to end in the width direction of the terminal block component 102, and outwardly adjacent to the first protrusion 121. In the first planar region 123 and the second protrusion 122 that spread out and the second planar region 124 that spreads outward and adjacent to the first planar region 123, a row 126 of a large number of terminals 125 arranged at equal intervals in each width direction. Is provided. The terminal group 126 is not shown in FIG.
[0024]
The terminal block component 102 also includes a multipolar male connector 129 that is disposed in the center of the central plane region 128 between the pair of protrusions 121 and 122 and that is paired with the multipolar female connector 114. And a mechanical setting lock switch 130 disposed on one side thereof.
[0025]
In addition, rectangular recesses 132 for receiving the four legs 106 of the unit main body 101 are formed at the four corners of the central plane region 128 of the terminal block component 102. At the center of the recesses 132, screws are inserted. A through hole 133 is formed (FIGS. 1 and 3). The terminal block component 102 is further provided with an additional multipolar male connector 135 at the center in the longitudinal direction on one side surface (FIG. 3).
[0026]
On the back surface of the terminal block component 102, that is, the second surface 140 opposite to the first surface 120 described above, a wide groove 143 formed by the side walls 141 and 142 facing each other across the central portion in the longitudinal direction. (FIG. 1) is formed, and the width of the groove 143 is substantially the same as the width of the DIN rail 144, and the depth of the groove 143 is substantially the same as the thickness of the DIN rail 144. The side walls 141 and 142 are provided with a plurality of claws 145 that protrude toward the groove 143 and engage with the side edges of the DIN rail 144, and the grooves 143 and the claws 145 constitute DIN rail mounting means. .
[0027]
According to the temperature control unit 100 of the embodiment, as shown in FIGS. 4 and 5, the main body 101 is inserted into the rectangular opening 151 formed in the panel 150 of the control panel (not shown). When the multi-pole female connector 114 on the side and the multi-pole male connector 129 on the terminal block component 102 side are connected, the four legs 106 of the main body 101 are fitted into the recess 132 of the terminal block component 102 almost simultaneously. . Thereafter, at the tip of each leg 106 of the main body 101, the surface on which the screw hole 107 provided on the surface facing the terminal block component 102 is disposed, and the terminal block component side in surface contact with the screw engaging portion. The main body 101 and the terminal block component 102 are fixed and integrated with each other by tightening the screw 152 with respect to the screw hole 106 so that the surfaces closely match each other. Next, the temperature adjustment control unit 100 is further pushed into the rectangular opening 151 to engage the stepped portion of the front panel 103 of the unit main body 101 with the peripheral edge of the rectangular opening 151 of the panel 150. A rectangular opening of the panel 150 is formed by fastening means such as the fixture 1 shown in FIG. 1 and FIG. 2 of the No. 23810 publication (reference numeral described in the publication) and a step portion of the front panel 103 of the unit main body 101. The temperature adjustment control unit main body 101 is fixed to the control panel by sandwiching the periphery of 151. As a specific method of fixing the temperature adjustment control unit main body 101 to the control panel, any method may be used as long as a measuring instrument, a measuring instrument or the like is fixed to the control panel.
[0028]
Thus, since the temperature control unit 100 includes the main body 101 and the terminal block component 102 that are separable from each other, the size of the terminal block component 102 is the size of the opening 151 of the front panel 150 of the control panel. An arbitrary size can be set without being restricted by the size, and therefore the number of terminals 125 of the terminal block component 102 can be set arbitrarily.
[0029]
In order to assemble the temperature adjustment control unit 100 to the DIN rail 144 (FIG. 6), the temperature adjustment control unit 100 can be positioned and fixed using the groove 143 and the claw 145 of the terminal block component 102.
[0030]
After the main body 101 and the terminal block component 102 are once connected and integrated, power is supplied to the unit main body 101 via the terminal block component 102, and various setting values are obtained by the user operating the operation unit 109 of the main body 101. Set (control parameter). After the setting of the setting value is completed, the user stops the power supply and separates the unit main body 101 and the terminal block component 102 to expose the setting lock switch 130. Next, the unit main body 101 and the terminal block component 102 are integrated again. Thereby, even if the user performs an operation for changing the set value, the operation is canceled and the change of the set value is prohibited.
[0031]
In order to change the setting value, the user can remove the main body 101 from the terminal block component 102 and turn off the setting lock switch 130 to allow the setting value to be changed. Of course, if the setting lock switch 130 is OFF, the setting value (control parameter) can be changed by operating the operation unit 109 even after the main body 101 and the terminal block component 102 are integrated. .
[0032]
That is, once the setting lock switch 130 is turned ON, the user can disconnect the main body 101 and the terminal block component 102 unless the unit main body 101 and the terminal block component 102 are switched to OFF. Unless there is a positive will, it is possible to prevent a situation in which the setting value is changed carelessly. As can be easily understood by those skilled in the art, the setting lock switch 130 may be provided on the unit body 101 side instead of being provided on the terminal block component 102. In this case, for the purpose of connecting the unit main body 101 and the terminal block component 102, the setting lock switch 130 provided on the rear surface of the unit main body 101 or on the terminal block component 102 cannot be operated from the outside. Therefore, it is preferable that the setting lock switch 130 is disposed on a region sandwiched between the unit main body 101 and the terminal block component 102, that is, on a mutual mating surface.
[0033]
The temperature control unit 100 can be connected to other external devices by using an additional multipolar male connector 135 disposed on the side surface of the terminal block component 102. That is, the temperature adjustment control unit 100 may connect the extension multipolar male connector 135 on the terminal block component 102 side and the connection connector 156 for other external devices by the harness 155.
[0034]
Also, by standardizing the association between the terminals of the additional multipolar male connector 135 and the corresponding terminals with other external devices, for example, for the convenience of the user, the temperature adjustment control unit 100 (main body 101) Alternatively, another IO unit, for example, can be incorporated.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view of a temperature control unit according to an embodiment as viewed obliquely from the rear.
FIG. 2 is an exploded perspective view of the main body of the temperature control unit according to the embodiment as seen through the control unit obliquely from above.
FIG. 3 is a front view of terminal block parts of the temperature control unit of the embodiment.
FIG. 4 is a diagram for explaining a process of inserting the temperature adjustment control unit of the embodiment into the opening of the control panel.
FIG. 5 is a diagram for explaining a state in which the temperature adjustment control unit of the embodiment is attached to the control panel.
FIG. 6 is a diagram for explaining that the temperature control unit of the embodiment can be attached to the DIN rail.
[Explanation of symbols]
100 Temperature Control Unit 101 Unit Body 102 Terminal Block Part 114 Unit Body Side Multi-Pole Female Connector 115, 116 Extension Relay Connector 129 Terminal Block Part Side Multi-Pole Male Connector 135 Extension Multi-Pole Male Connector 143 DIN Rail Groove 144 DIN Rail 145 DIN rail engaging claw

Claims (3)

A control device comprising a main body and terminal block parts that are separable from each other, and can be attached to a control panel and a DIN rail,
The main body includes an operation unit and a display unit, and a front panel larger than an opening formed in the panel of the control panel;
A body casing having a cubic or rectangular parallelepiped shape extending rearward from the front panel and having a height-direction cross section that can be inserted into the opening ;
A part of the rear surface of the front panel that protrudes outward from the main body casing, and a step portion that is locked to the periphery of the opening of the control panel when the main body casing is inserted into the opening;
A first connector provided on the back surface of the main casing and connected to the terminal block component;
The terminal block parts are:
A second connector provided on the front surface of the terminal block component and connected to the first connector;
A groove for a DIN rail having a width corresponding to a DIN rail having a predetermined width and a plurality of claws for locking the DIN rail , provided on the back surface of the terminal block component ;
The height dimension of the terminal block component is larger than the height dimension of the opening of the control panel,
A protrusion protruding in the width direction of the DIN rail from the main body casing when the first connector of the main body casing and the second connector of the terminal block component are connected after the main body casing is inserted into the opening of the control panel. Further comprising
A control device, wherein a plurality of terminals are provided on a surface of the protrusion facing the control panel. An extension connector disposed on a side surface of the terminal block component on a side surface of the terminal block component, which is a side surface in the extending direction of the DIN rail, on which the protrusion is not provided;
The control device according to claim 1 , wherein the extension connector and the external device can be connected by a harness. A mechanical setting lock switch is provided on a back surface of the main casing and covered by the terminal block component when the main unit and the terminal block component are connected to each other by a connector, and the setting lock switch is turned on. change the set value of the control devices is prohibited by, in any one of claims 1 or 2, characterized in that the change of the set value of the control device is permitted by OFF operation of the switch The control equipment described.

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